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The Generac 3100 psi (gas - cold water) pressure washer is available for purchase today.

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Generac 3100 PSI (Gas - Cold Water) Pressure Washer

(Based on expert analysis, manufacturer ratings and customer reviews)

4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5
138 Reviews
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$399.00
$359.10
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  • Features
  • Specs
  • 10
    Q&A 
  • 138
    Reviews
  • Articles
  • Shipping
  • Accessories

Grade
Style
Water Pressure
3100
PSI
Water Flow
2.7
GPM
Cleaning Speed
8370
Cleaning Units
Engine
Generac
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Powerful Generac 5.5 HP Horizontal Shaft OHV Engine
Easily handles most tasks around the house

High Performance AR Axial Cam Pump
Brass head is more durable than all-aluminum pumps
Easily accessible- no more kneeling to connect hoses

Handy, Manuverable Cart With Spray Gun Holster
Engine & pump are perfectly balanced & easy to move
Large Never-Flat wheels take on varied terrain

Ergonomic Generac Spray Gun With 20" Lance
Soft grip & easy-pull inverted fulcrum trigger reduces fatigue

5 Quick-Click™ Nozzle Tips & 30' M22 Hose
0°, 15°, 25°, 40°, and soap applicator

Two 3/4 Gallon On-Board Detergent Tanks
Keep 2 detergents handy- wash & wax, cleaner & grease cutter, etc

Stabilizing Foot Rest
Holds the unit steady for smoother pull-starting

2 Year Limited Warranty
Protects your investment

Not For Sale In California
Doesn't meet strict CARB emissions standards



Model
  Model Number:6598
 UPC:696471065985
 Manufacturer:Generac
Engine
 Engine Brand:Generac
 Starter:Recoil
 HP/CC5.5 HP/212 cc
 Fuel Tank Size3.2 quarts
Pump
 Pump Brand:AR
 Pump Type:Axial Cam
 Adjustable Pressure:No
 Chemical Injection:Dual Detergent Tank
 Detergent Tank Capacity:.75 gal x2
Housing
 Frame Type:2-Wheel Cart
 Wheels:NeverFlat
Hose
 Hose Storage:Hook
 Hose Length:30 ft
 Hose Material:PVC/Plastic
 Hose Diameter:1/4 Inch
 Hose Connections:M22
Spray Gun
 Spray Gun Connection:M22
 Spray Gun Grade:Residential gallons
 Spray Gun Wand:Single Wand
 Spray Tips:Quick Connect Tips (5)
 Turbo Nozzle:Sold Separately
Overview
 Weight:67.5 Lbs.
 Dimensions:23.3L x 16W x 40.3H
 Mfr Consumer Warranty:2 Years

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  10 Questions
Q: Is there an extension hose available for this model? What hose would you suggest if I go with a
longer hose instead of the extension hose?

by Steve Lohman from Missouri on April 24, 2015

A: If you need to go with a longer high pressure hose, I would recommend jumping up to a 5/16" diameter hose and using it as a replacement. To extend the length, you would want a stronger more durable hose like the 5/16" hoses. I have attached a link for you to view a 50FT high pressure hose I would recommend for this unit.

50FT High Pressure Hose
by Mike, Product Expert
Q: What is a flywheel brake and what is the purpose of it? does the generac have this brake and the Honda ? I had a Honda washer with a brake on it and I had a lot of different problems with it so im very cautions of buying another
by John T from Florida on September 13, 2014

A: No, this unit does not have a flywheel brake on it. The purpose of that is to control the engine speed. This unit is a great choice for homeowner use. I highly recommend this unit. The pump on the unit is made from AR, and is one of the best axial cam pumps in the industry today.
by Mike, Product Expert
Q: I have a 3100psi Generac model 60242 I purchased from PED. Works great. I have noticed lately that when I tilt the unit back in order to reposition it, it will suddenly quit. Is this the "Oil Alert System" sensing a drop in oil level and shutting down the engine? The unit restarts after a couple of pulls.
by Dave from North Carolina on June 05, 2014

A: It could be the Oil Alert sensor, or an adjustment needed in the carburetor... The good news is this unit comes with a 2 year Factory Warranty from the folks at Generac.

You can use their Service Center Locator to find your local Authorized Repair facilities, or give them a call at (888) 436-3722 x5381.

Please be sure to have the serial number of your pressure washer handy if you call Generac; they usually ask for it. You will need a copy of your invoice for any warranty work- just click on My Account in the upper right corner of our website and follow the prompts to print one out.

If there are several repair locations in your area you may want to call around to see which one has the shortest turn-around time so you get your pressure washer back as quickly as possible.
by Mike, Product Expert
Q: Hi...I see the site sells extended warranties. Who covers these, and what's covered. Also, is it worth it to go beyond the two year Generac offers.
by Brian Warehime from New York on May 29, 2014

A: The Extended warranty is covered by WarrenTech. They will start the day after the manufacture warranty and cover all non wearable items. Things that would not be covered would be items like the hose, gun, wand. They would have you take it to a local service center. I feel the Generac Warranty is great. However, if you would like extra time after that it is available for purchase.
by Mike, Product Expert
Q: I am looking for recommendation on accessories needed for the Generac 6598 to easily clean siding and gutters on a large 2 story house.
Thanks.

by Jared from Florida on May 08, 2014

A: I definitely recommend a telescoping wand and gutter cleaner attachment for your application. If you would like to spray detergent through the telescoping wand you will need to go with an aluminum one. I have included link to the telescoping wand, gutter cleaner, adapter needed to attach to your high pressure hose, and the detergent I recommend.

Telescoping Wand

Gutter Cleaner attachment

Adapter

Detergent
by Mike, Product Expert
Q: I'm buying a generac gas model# 6598 from you guys and am looking at MTM hydrojet turbonozzle to go with it.What size orifice should I get? We have a two story home (30' to gable ends) will MTM Hydro long-range detergent foamer work?
by Bruce E Lawrence from Maine on April 17, 2014

A: You should get a 3.0 Orifice Turbo Nozzle. Turbo Nozzles are meant to increase cleaning speed and efficiency, not for long distances. I have attached a link for you.

3.0 Orifice Turbo Nozzle

For your two story home and gables I would go with model 100145. This product allows you to reach up to 3 stories high. I have included a link to this as well.

Model 100145

Both of these product will quick connect on to the end of your lance where the colored spray tips usually go.
by Mike, Product Expert
Q: Will the Generac 6598 connect to a foam cannon like the MTM Hydro without needing any additional hardware?
by Doug from Rhode Island on April 15, 2014

A: Yes, you can purchase the MTM foamer model 14.0263. This has a fitting on it so that it quick connects into where your colored spray tips usually go, so no additional hardware is needed. I love this foamer!

MTM Foamer
by Mike, Product Expert
Q: What is the pump made out of?
by Zach from Minnesota on April 14, 2014

A: This unit has an AR axial cam pump with a brass head on it. It is a step above the rest in it's category. The brass head dissipates heat more effectively, therefore increasing the life of the pump.
by Mike, Product Expert
Q: Is there a telescoping spray wand available for the
Generac Model 6598?

by Carmen Fontana from Delaware on April 13, 2014

A: Yes, if you would like to be able to dispense detergent I recommend the 24' Aluminum Telescoping Wand. I have also included the adapter you will need to connect this product to your high pressure hose.


24' Aluminum Telescoping Wand

Adapter
by Mike, Product Expert
Q: If you go to Lowes, they still carry the model 6024. You show that model as being disconntinued. The 6598 seems to match up with the 6024, spec for spec. Is there any difference? Why wouldn't Lowes carry the 6598?
by Mark from Connecticut on March 19, 2014

A: The 6024 is the old model number. The new model number is the 6598. It has all the same components as the 6024, just different colors to make it more appealing.
by Mike, Product Expert
Generac 6598 Reviews & Ratings
Write Review
Overall Rating
Features
5/5
Quality
5/5
Performance
5/5
Value
5/5
Overall
4.7 out of 54.7 out of 54.7 out of 54.7 out of 54.7 out of 5
Pros
Easy To Use (45)
I'd Buy It Again (29)
Price (26)
Exceeded Expectations (19)
Easy To Store (17)
Cons
Low Quality (5)
Bad Instructions (4)
Difficult To Use (2)
Expensive (2)
Heavy (2)
94% of respondents would recommend this product to a friend
138 Reviews  Sort by 
 
Mike, the Pressure Washer Expert
Pressure Washer Expert

Product Expert
Total Reviews
120 Reviews
Total Helpful Votes
3561 Helpful Votes
Pressure Washers Direct Recommended

Given the oversized 212cc Generac brand engine and the durable AR brand axial cam pump, this model is great choice for any homeowner looking to purchase a very good quality pressure washer without putting a large hole in their wallet.

The frame on this unit, like all of the other Generac pressure washers, is a very well thought out design with the consumer in mind. It's balanced and easy to maneuver with 2 easily accessible detergent tanks at the bottom. This model has a vertical frame... more
Mike Recommends This Model
Was this review helpful?
33240
John C.
Morganton, NC
Purchased from Pressure Washers Direct
Purchased 4/4/15
Most Helpful Positive Review
REVIEWED
APR.
09
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Prior Reviews Predict Your Experience
Very fast shipping. My Generac 6598 came in 4 days. I ordered a Surface Cleaner the same day and I have no idea what the status is, but I am waiting on it. I ordered the ultimate quick connect today. I highly recommend getting these two accessories.

I used my pressure washer for the past two days and I will give you my experience so far.

Set up was easy but my gas cap, like other reviewers, came broken. Luckily, the gas cap has a metal cap that is molded into a plastic outer... more
Pros: Easy To Use, I'd Buy It Again, Price, Easy To Store
Cons: Packaging, Needs Protection On The Top Of The Box
John Recommends This Generac Product
Mike, the Pressure Washer Expert
Product Expert
John,
Thank you so much for sharing such a great review. This kind of feedback is extremely helpful to other shoppers, and we all really appreciate you taking the time to write it.

Best wishes, and have a great spring.
more
Manufacturer Response
Brand Rep
John,
Thank you for providing us with your highly-detailed review. Your input not only helps future shoppers, but also allows us to review our products and make adjustments and/or changes where we can. We appreciated your constructive feedback, and would like to encourage you to contact us directly at 888-GENERAC (436-3722) if there is something that we can help you with in the future.
more
Was this review helpful?
94
Pat
Purchased from Pressure Washers Direct
Purchased 5/22/14
Total Helpful Votes
40 Helpful Votes
Most Helpful Critical Review
REVIEWED
JUN.
03
2014
1 out of 51 out of 51 out of 51 out of 51 out of 5
Hard To Start & Running Rough
Fast delivery & easy set-up. The unit was hard to start and ran very rough. Can't be returned since it has had fuel in it. Authorized warranty repair shop should be able to get to it in a couple of weeks. And now the unit is on sale.
Cons: Low Quality
Mike, the Pressure Washer Expert
Product Expert
Pat,
I am sorry to hear your pressure washer isn't running well; I understand how disappointing that can be.

I see from your file that there are several Generac Authorized repair locations in your area- I hope you called around to find the one with the shortest turn-around time? During the summer months I realize they get busy.

It is Federal Law that prevents shipping an engine that has had gas in it, since it's a fire/explosion hazard. That's why we only sell products with national service networks.

For folks reading this review, there are a couple tips for new engines. First is to use fresh gas- the stuff you've had sitting around for the lawn mower may have lost a lot of its volatile compounds and won't burn well.

Second is to hook up the water to the unit, then pull the spray gun trigger and let the water run for a minute without starting the engine. This drives out all the air from the pump, preventing vapor lock. Since the pump and engine are connected directly, vapor lock can make it very difficult to get the engine to turn over.

We post the best prices we can every day. Occasionally manufacturers will run specials where they provide bonus items or a special price for sales that happen in a specific time period. Unfortunately they won't provide credits for sales that happen outside their time period. We appreciate your business, and apologize for any inconvenience.
more
Was this review helpful?
4010
Dan M.
Cutler Bay, FL
Purchased from Pressure Washers Direct
Purchased 4/30/15
Total Reviews
2 Reviews
REVIEWED
MAY.
22
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Used It For 6 Hours Right From Box
I used the power washer straight from the box and it ran it for 6 hours and did more than I thought it would, I am very, very happy with it.
Dan Recommends This Generac Product
Was this review helpful?
00
Tracy G.
Sparta, GA
Purchased from Pressure Washers Direct
Purchased 4/29/15
REVIEWED
MAY.
21
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
I Love My New Generac Pressure Washer!
Great product for home use. Gets the job done. Easy set up, east start. I have used it to clean my pool deck, boat house, boat, house and office.

My only problem is I have had a difficult time keeping the detergent line primed. Other than that, it is a SUPERB piece of equipment.
Tracy Recommends This Generac Product
Manufacturer Response
Brand Rep
Tracy,
Thank you for submitting your review of the 3100 PSI residential grade pressure washer. We are sorry to learn of the issues that you are currently experiencing with your detergent line. While the siphoning tube should be securely connected to the unit's pump and submerged in the detergent when soap-based applications are desired, we would recommend contacting an independent authorized service provider in your local area for any required diagnostic work. These independent parties have been trained to not only determine the cause of a unit's issues, but to also provide any applicable warranty coverage as well. If you have any additional comments, questions, or concerns, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
more
Was this review helpful?
00
Jason H.
Palisades, NY
Purchased from Pressure Washers Direct
Purchased 4/9/15
REVIEWED
MAY.
21
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Machine For The Money
This is not a flimsy, crappy machine. It's sturdy and well made. The power washer works great, with zero complaints!! This is definitely worth the money, which, compared to other machines, is much less.
Jason Recommends This Generac Product
Manufacturer Response
Brand Rep
Jason,
Thank you for providing us with your review of the 3100 PSI residential grade pressure washer. We value your positive feedback. Don't forget to register your unit to receive future consumer alerts and warranty-related information. For your convenience, registration can be completed online: http://www.generac.com/generac-nation-sign-up?cid=frm-105-aa. If you have any questions about the registration process, please do not hesitate to contact us directly at 888-GENERAC (436-3722).
more
Was this review helpful?
00
Henry S.
Dyersburg, TN
Purchased from Pressure Washers Direct
Purchased 4/29/15
REVIEWED
MAY.
20
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
As Advertised
I ordered it to clean my patio, did an excellent job. It arrived quickly with free shipping which a great selling point for me. I don't order from sites with shipping and tax. I will come here first for future business.
Henry Recommends This Generac Product
Was this review helpful?
00
Gary S.
Chatsworth, GA
Purchased from Pressure Washers Direct
Purchased 4/26/15
REVIEWED
MAY.
20
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Impressive Machine
This machine has performed an amazing job on my vinyl siding, decks and driveway. This 6598 has out-performed every commercial washer I have ever rented. Great product!!
Pros: Easy To Use, Price, Exceeded Expectations, High Quality
Gary Recommends This Generac Product
Was this review helpful?
00
Robert C.
Richardson, TX
Purchased from Pressure Washers Direct
Purchased 4/28/15
Total Reviews
2 Reviews
REVIEWED
MAY.
20
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Awesome
Not having knowledge of the Generac brand, I purchased this because of the reviews I read. This thing is awesome! Lots of power, well constructed, and the shipping was extremely fast! I couldn't be happier!!
Robert Recommends This Generac Product
Manufacturer Response
Brand Rep
Robert,
We are happy that the 3100 PSI residential grade power washer has lived up to its reviews, as well as your expectations! If you have any questions about your product at any time, please contact us directly at 888-GENERAC (436-3722). Moreover, please be sure to register your unit for warranty-related purposes as well. For your convenience, registration can be completed online: http://www.generac.com/generac-nation-sign-up?cid=frm-105-aa.
more
Was this review helpful?
00
Harold T.
Pell City, AL
Purchased from Pressure Washers Direct
Purchased 4/27/15
REVIEWED
MAY.
19
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Love
This has got to be the best product out there for the money. Works great, user friendly, and starts the first pull every time. Can't help but fall in love with it.
Harold Recommends This Generac Product
Was this review helpful?
00
Kerry W.
Chicago, IL
Purchased from Pressure Washers Direct
Purchased 4/27/15
Total Reviews
2 Reviews
REVIEWED
MAY.
19
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
#6598
Overall this Model is just as good, or better than I thought. I thought that I would regret not getting one with a Honda engine, but so far this engine is, easy to start, and has not had any issues so far.

The only issue I had, is that the hose that connects to the wand leaks. I have contacted Generac, and they said that they would be sending me a replacement, which is great, although, I have not received it yet. Hopefully I will get it soon.

This is a very good Pressure washer for the... more
Kerry Recommends This Generac Product
Manufacturer Response
Brand Rep
Kerry,
We are happy to learn of your overall satisfaction with our product. While we are disappointed to learn of the issues that you have experienced with the unit's wand, we are happy to learn that our Customer Support team has been able to send you out an applicable replacement. To inquire about the shipping status of your replacement part, please contact us directly at 888-GENERAC (436-3722). When calling in, please have the serial number of your unit on hand. We thank you for your business and thoughtful feedback.
more
Was this review helpful?
00
Kerry W.
Chicago, IL
Purchased from Pressure Washers Direct
Purchased 4/27/15
Total Reviews
2 Reviews
REVIEWED
MAY.
19
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
#6598
Overall this Model is just as good, or better than I thought. I thought that I would regret not getting one with a Honda engine, but so far this engine is, easy to start, and has not had any issues so far.

The only issue I had, is that the hose that connects to the wand leaks. I have contacted Generac, and they said that they would be sending me a replacement, which is great, although, I have not received it yet. Hopefully I will get it soon.

This is a very good pressure washer for the... more
Kerry Recommends This Generac Product
Manufacturer Response
Brand Rep
Kerry,
We are happy to learn of your overall satisfaction with our product. While we are disappointed to learn of the issues that you have experienced with the unit's wand, we are happy to learn that our Customer Support team has been able to send you out an applicable replacement. To inquire about the shipping status of your replacement part, please contact us directly at 888-GENERAC (436-3722). When calling in, please have the serial number of your unit on hand. We thank you for your business and thoughtful feedback.
more
Was this review helpful?
00
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